In principle, only the dot is used as a comma separator and it is set explicitly when Drago starts. But Drago is compiled with a French system and perhaps the value of the decimal separator set when starting is lost and replaced silently with the local one at compile time. To add to confusion, when running Drago on my computer, it respects the expected behavior and does not admit the comma as decimal separator.

Ok. I have to upload a beta release in the days to come, probably on Sunday. This version will accept indifferently dot or coma when entering the komi. This should avoid these troubles. It would be useful if you could check if this release solves your problem.

Regarding the final score, could you save a game and send it to me? (email address in about box).

W+6.4

I should have had this in mind. Decimal scores are given by GnuGo score estimator. This can be checked by opening the GTP window.